It's with the old weak pack.
Yeah, I'm not really sure what's going on. From what I've read, it was only the very first revision of the BCM that had this cold weather bug. I'll have to check, but I think the BCM I'm using is a couple of revisions in.. so maybe you're right.
Maybe I'll try putting in a late revision BCM to see if it still happens. It's nice being able to see IMA data without having to rely on the BCM Gauge now.
Overcharging a NiMH cell at a fraction of C isn't a big deal(like the 350mA grid charge), but high amperage(1C+) overcharging isn't a good thing. It does seem the car is pretty good at preventing any dangerous over or undercharge situation though, so maybe it's OK.
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Insight #1 - Silver '01 5MT @
158,388 as of 7/11 - Best Tank: 84.5MPG over 807mi

Insight #2 - Silver '01 5MT @
450,000 as of 1/12 - Best Tank: 86.0MPG over 800mi

Insight #3 - Silver '00 5MT, MIMA #163P, BCM Gauge, OBDIIC&C Gauge, BetterBattery @
228,869 as of 1/12 - Best Tank: 78.4mpg over 687mi